The Intel 13th gen will draw ~1% per hour while suspended to RAM.
replyMy findings on it: https://sjg.io/writing/suspend-battery-drain-framework-13-ub...
Thanks for the detailed write-up.
replyIIRC my Thinkpad T14 G2 has S3 and it draws 0.3% per hour, pretty much in line with what Macbooks draw when sleeping.